B. Jauk et al., Design and synthesis of a conformationally rigid mimic of the dihydropyrimidine calcium channel modulator SQ 32,926, MOLECULES, 5(3), 2000, pp. 227-239
A conformationally rigid polyheterocycle (3) which mimics the putative rece
ptor-bound conformation of dihydropyridine-type calcium channel modulators
is prepared in a seven-step reaction sequence based on a Biginelli-type cyc
locondensation reaction.